Poly(1

5-diaminoanthraquinone)(PDAAQ)was synthesized by a chemical oxidation method and used as cathode material in rechargeable lithium batteries．IR spectrum confirms its molecular constitute．Experiment results show that the particle size d0.5 is 7．9 μm and PDAAQ has the specific surface area of 8．9 m2·g-1

also its conductivity is 0．8 S·cm-1．All of these properties satisfy the requirement of being used as cathode material．When used in rechargeable lithium batteries

the capacity and cycle performance are contributed by the cooperating effect of the quinonc group and polyaniline skeleton

which is proved troush the charge—discharge experiment．It is found that in Li(CF3SO2)2N／PC-DGDM electrolyte system PDAAQ’s first discharge capacity is 221 mAb·g-1 which reduces to 177 mAh·g-1 with 80％ capacity retention after 40 cycles．Therefore PDAAQ is a very promising cathode material for rechergeable lithium batteries．